基于ZigBee的电缆接头压接缺陷监测系统设计  

Design of cable joint crimping defect monitoring system based on ZigBee

作　　者：张雨婷 李策 孔飞飞 张建忠 马喆 张明江 ZHANG Yuting;LI Ce;KONG Feifei;ZHANG Jianzhong;MA Zhe;ZHANG Mingjiang(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;Jinzhong Power Supply Company,State Grid Shanxi Electric Power Company,Yuci 030600,China;Shanxi Yuguang Cable Co Ltd,Jincheng 048006,China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [2]国网山西省电力公司晋中供电公司,山西榆次030600 [3]山西宇光电缆有限公司,山西晋城048006

出　　处：《传感器与微系统》2023年第5期87-90,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(62075153,62075151,61527819);山西省重点研发计划资助项目(202102150101004)。

摘　　要：提出采用环式无线测温的监测系统,实现对运行电缆中间接头温度的实时测量和状态评估。使用COMSOL Multiphysics软件建立电缆中间接头电磁—热耦合三维计算模型,利用有限元分析(FEA)方法计算获得了压接缺陷下的电缆中间接头的温度变化规律;引入接触系数k表征压接缺陷程度,并给出了线芯导体温度推导公式。结果表明:当接触系数k>2.7时,电缆中间接头接触电阻较大,存在安全隐患。在此基础上,基于ZigBee技术搭建了环式无线测温监测系统,并编写了上位机程序;实验表明:监测系统测量误差最大值为0.4℃,满足实际应用需求。A cable joint monitoring system with ring-type wireless temperature measurement is put forword to realize real-time measurement of the operating cable joint temperature and status assessment.A 3D electromagnetic-thermal coupling analysis model of cable joint is established by the software COMSOL Multiphysics,the finite element analysis(FEA)method is used to calculate temperature variation laws of cable joint considering the crimping defect.Then,contact coefficient k is introduced to characterize the degree of crimping defects and a formula for cable conductor temperature is given.The results show that when the contact coefficient k is greater than 2.7,contact resistance of cable joint is great,which may cause safety risks.Based on this,a ring-type wireless temperature measurement system is built based on ZigBee and monitoring software is designed,and the maximum error of cable joint monitoring system is 0.4℃,meeting requirements of practical application.

关 键 词：电缆中间接头 压接缺陷 ZIGBEE无线网络 温度监测 故障诊断 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置] TM249[自动化与计算机技术—控制科学与工程]